Drawing frame for a spinning machine



Dec. 10, 1957 A. scHUssLER ETAL 2,815,538

DRAWING FRAME FOR A SPINNING MACHINE '2 Sheets-Sheet 1 Filed June 25,1955 we //0 m9 Tlql. /2 47 /02 INVENTORS A74- E IPED SCHUSSLEP w//vSewn/=57? Dec. 10, 1957 A. SCHUSSLER ETAL 2,815,538

DRAWING FRAME FOR A SPINNING MACHINE Filed June 23, 1955 '2 Sheets-Sheet2 INVENTORS 194F250 SCHUSSL ER 'Rw/ v SCH/9E5)? front end of the bar 28.

U it d S te Page? nereimaschinenhau .Karl-Marx-Stndt, Karl-Marx-Stadt,Germany Application June 23, 1955, Serial N 517,626 16 Claims. (11.19-135 This invention relates to spinning machines, and'moreparticularly to a drawing frame tor spinning machines, especially flyframes, wherein the top rollers are subjected to a variable load.

An object of the invention is to provide a drawing frame, wherein therequired pressure on the top rollers may be obtained by means of acomparatively light weighting means.

Another object of the invention is to improve on the construction ofdrawing frames, as now customarily made.

Other objects and structural details of the invention will be apparentfrom the following description when read in conjunction with theaccompanying drawings, forming part of this specification, wherein:

Fig. 1 is a verticalsectional view of a drawing frame according to theinvention,

Fig. 2 is a vertical sectional view of another embodiment of a drawingframe according to the invention, and

Fig. 3 is a vertical sectional view of still another embodiment of adrawing frame according. to the invention.

Referring now to Fig. 1, 9 generally indicates an arm or supportswingably mounted on a rod .1 extending hehind the drawing frameperpendicular to the direction A of drawing in the drawing frame. Adouble-armed lever 2 swing'ably mounted on said arm 9 .ar25 serves asholder of the top rollers 50, 51, 52. The pivotal connection 25 betweensaid lever -2 and the -9 is above said top rollers 50, 51, 52.

The forwardly projecting arm 54 of said double-armed lever or holder 2is pivoted at 26 to a carrier carrying the top rollers 50, 51, 52. -Abar 28 passing through an aperture of the carrier 27 is adjusta-blymounted on the latter. A saddle 29 is secured to the The top roller 50of the pair of delivery rollers 50, 56 is journ'alled in said saddle 29.A member 30 is secured to the rear end of the bar 28. Another bar 31,carrying the saddles 32, 33, is adjustably mounted on said member 30.The top rollers 51 and 52 are journalled in said saddles 32 and 33respectively.

The rearwardly extending arm 58 of the double-armed lever 2 is pivotedat 35 to the lower end of a link 34, the upper end of which is pivotedat 36 to the rear-end of a weight lever 11 swing'ably mounted on the arm9 at at a point intermediate its ends. A weight 12 is shifta'bly andadjustably mounted on the forwardly extending arm of the weight lever11.

Thus, as will be readily understood from above, the pivotal connection25 between the holderLZ and the arm 9 is located between the pivotalconnection 26 of the holder 2 with the carrier .27 and the pivotalconnection 35 of said holder 2 with the link 34. In like manner, thepivotal connection 10 of the weight -lever 11 located between the weightH and the pivotal connection 36 of the link 34 with the'zrear end of.said weightlever 11. Thus, by selecting suitable lengths of the arms2,815,538 Patented Dec. 10, 195? of levers, a very considerable ratio ofload between the load of the weight 12 acting on the weight lever 11 andthe load acting on the top rollers 50, 51, '52 .may be obtained. Inother words, the required pressure on the top rollers 50, 51, 52 may beobtained by means of a comparatively light weight 12.

The top rollers 50, 51, 52 may be removed from the bottom rollers 56,60, 61 by swinging the arm .9 upwardly around the rod 1. The arm 9 maybe held in its active end position as shown by a locking device 37mounted on said arm.

The embodiment of the invention, as shown in Fig. 2, substantiallycorresponds to the one as hereinbefore described in conjunction withFig. 1. However, accordiug to Fig. 2, the pivotal connection 126 betweenthe top roller carrier 127 and the holder 102 is located between thepivotal connections and of the holder 102 with the support or arm 109and the link 1 34 respectively. Likewise, the pivotal connection 136between the link 134 and the weight lever 111 is located between theweight 112 and the pivotal connection 110 between the weight lever 111and the arm 109. Furthermore, in contrast to the previously describedembodiment, the bar 128 is equipped at each of its ends with a carrier138 and 139 respectively, each of said car- :iiers carrying two toprollers 150, 149 and 151, 152 respectively.

Again the arm 109 swin gably mounted on the rod 101 may he held in itsactive end position as shown by the locking device 137.

A third embodiment of the invention shown in Fig. 3 is somewhat similarto the embodiment shown in Fig. 2.

According to Fig. 3, the holder 202 is again swinga'bly mounted on thesupport or arm 209 at 225. The free rear end of the holder 202 is "ofthe weight lever 211, which is pivotally mounted on the arm 209 at 21-0.Said weight lever 211 has a nose 243 being in abutting engagement withthe holder 202 at 235. The top roller carrier 227 is pivoted to theholder 202 at 226, between the point 235 of engagement of the-weightlever 211 with the holder 202 and the pivotal connection 225 of theholder '202 with the arm 209. The holder 202 is provided with a joint240 located in front of the pivot 226. Furthermore, the holder 202 isprovided with a forwardly extending arm 241, which projects beyond thepivot 225. A biasing means or compression spring 242 engaged with saidextension 241 acts in the direction of the load. Said spring 242arranged below the extension 241 may be adjusted by means of a screw245.

Extension arm 241 is preferably still further extended beyond the spring242, forming at this point a handle 244. By this arrangement the toprollers 250, 251, 252 may be easily lifted manually. To that purpose,handle 244 is swung in the direction of the arrow B.

The main purpose of the spring 242 is the dampening of the movements ofthe weight lever 211.

Furthermore, however, said spring 242 also acts as a weighting means.This may be accomplished in that spring 242 supplements the load ofweight lever 211. In such an arrangement the force of the spring and theweight of the load may be balanced with respect to each other. Then, thefree end of the holder 202 is urged upwardly under the influence of thespring 242 about the pivot 226 of the top roller carrier 227. Thisrocking movement of the rear end of the holder 202 about the pivot .226will be counteracted by the weight lever 211. A certain predeterminedposition of the weight lever 1211 may be obtained by a correspondingadjustthem of the spring 242. If in a spinning machine or-afly frame theweight levers 211 of all drawing frames are under the influence spaced 3set in the same position, the weight levers 211 may also serve asindicators of disturbances, which may be readily discovered as soon asone or more weight levers are no longer in alignment with the others.

According to the embodiments shown in Figs. 1 and 2, the operativeconnection between the holder 2 or 102 respectively with the weightlever 11 or 111 respectively is obtained by means of a link 34 or 134respectively. According to the embodiment shown in Fig. 3, saidoperative connection is obtained by simply arranging on the weight lever211 a nose for abutting engagement with the free end of the holder 202.

According to Figs. 1 and 2, the weight lever 11 or 111 respectively isprovided with a separate weight 12 or 112 respectively, which,preferably, is slidably and adjustably mounted on said weight lever.According to Fig. 3, however, a separate weight is omitted and theweight lever 211 itself has the Weight of the required load.

We have described preferred embodiments of our invention, but it isunderstood that this disclosure is for the purpose of illustration, andthat various omissions and changes in shape, proportion and arrangementof parts, as well as the substitution of equivalent elements for thearrangements shown and described may be made without departing from thespirit and scope of the invention as set forth in the appended claims.

What we claim is:

1. In a drawing frame for a spinning machine, the combination of: aseries of rotatable bottom rollers, a series of rotatable top rollers incooperative relationship to said series of bottom rollers, a supportincluding a portion extending above said series of top rollers, a weightlever pivoted to said support, a holding lever pivoted to said supportat a point spaced from the pivotal connection between said weight leverand said support,

carrying means pivoted to said holding lever at a point spaced from thepivotal connection between said holding lever and said support, saidcarrying means being operatively engaged with said series of top rollersfor holding same in place for cooperation with said series of bottomrollers, said weight lever and said holding lever being arranged at thesame side of said top rollers above the plane of the latter, andcontrolling means on said weight lever for an operative connectionbetween the latter and the rear end of said holding lever, said pivotalconnection between the weight lever and the support being spaced fromsaid controlling means.

2. In a drawing frame as claimed in claim 1, a weight adjustably mountedon said weight lever.

3. In a drawing frame as claimed in claim 1, said controlling meansincluding a link pivoted to said weight lever and to the rear end ofsaidholding lever, the pivotal connection between said weight lever and saidsupport being spaced from the pivotal connection between said weightlever and said link.

4. In a drawing frame as claimed in claim 1, said controlling meansincluding a link pivoted to said weight lever and to the rear end ofsaid holding lever, the pivotal connection between said weight lever andsaid support being spaced from the pivotal connection between saidweight lever and said link, the pivotal connection between .the holdinglever and the support being located between ,the pivotal connections ofsaid holding lever with said carrying means and with said link, and thepivotal connection between said weight lever and said support beinglocated between the weighting portion of said weight lever and thepivotal connection of said weight lever :With said link.

5. In a drawing frame'as claimed in claim 1, a weight :adjustablymounted on said weight lever, said controlling means including a linkpivoted to said weight lever and to the rear end of said holding lever,the pivotal connection between said weight lever and said support beingfrom the pivotal connection between said 'weight lever and said link,the pivotal connection between the holding lever and the support beinglocated between the pivotal connections of said holding lever with saidcarrying means and with said link, and the pivotal connection betweensaid weight lever and said support being located between said weight andthe pivotal connection of said weight lever with said link.

6. In a drawing frame as claimed in claim 1, said controlling meansincluding a link pivoted to said weight lever and to the rear end ofsaid holding lever, the pivotal connection between said weight lever andsaid support being spaced from the pivotal connection between saidweight lever and said link, the pivotal connection between said carryingmeans and said holding lever being located between the pivotalconnections of said holding lever with said support and with said link,and the pivotal connections between said link and said weight leverbeing. located between the weighting portion of said weight lever andthe pivotal connection of said weight lever with said support.

7. In a drawing frame as claimed in claim 1, a weight adjustably mountedon said weight lever, said controlling means including a link pivoted tosaid weight lever and to the rear end of said holding lever, the pivotalconnection between said Weight lever and said support being spaced fromthe pivotal connection between said weight lever and said link, thepivotal connection between said carrying means and said holding leverbeing located between the pivotal connections of said holding lever withsaid support and with said link, and the pivotal connection between saidlink and said weight lever being located between said weight and thepivotal connection of said weight lever with said support.

8. In a drawing frame as claimed in claim 1, biasing means engaged withsaid holding lever for subjecting same to an additional load.

9. In a drawing frame as claimed in claim 1, a spring engaged with saidholding lever for subjecting same to an additional load.

10. In a drawing frame as claimed in claim 1, said controlling meansincluding cooperating abutting means arranged on said weight lever andthe rear end of said holding lever.

from the pivotal connection between said weight lever and said support,carrying means pivoted to said rear arm of the holding means, saidcarrying means being operatively engaged with said series of top rollersfor holding the same in place for cooperation with said series of bottomrollers, said weight lever and said holding means being arranged at thesame side of said top rollers above the plane of the latter, controllingmeans on said weight lever for an operative connection between thelatter and the rear end of the rear arm of the holding means, saidpivotal connection between the weight lever and the support being to therear of said controlling means, and biasing means engaged with saidfront arm of the holding means for urging the joint between said frontarm and said rear arm in downward direction.

12. In a drawing frame as claimed in claim 11, said front arm includingan extension projecting forwardly beyond its pivotal connection with thesupport, and said biasing means including a compression engaged with the5 6 beyond its pivotal connection with the support, and said weightlever for abutting engagement with the rear arm extension forming ahandle. of the holding means.

15. In a drawing frame as claimed in claim 11, said controlling meansincluding cooperating abutting means Regal-911C13 (Cited in the file ofthis patent arran ed on aid Wei ht lever and said rear arm of theholding mean s. g FOREIGN PATENTS 16. In a drawing frame as claimed inclaim 11, said 178,221 Great Britain Apr. 20, 1922 controlling meansincluding a nose arranged on the

